Home / 275,015.04-379,538.28-154,156.35

Finding the Fourth Proportional to 275,015.04, 379,538.28 and 154,156.35

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Solution

The fourth proportional to 275,015.04, 379,538.28 and 154,156.35 is: 212,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,015.04 : 379,538.28 = 154,156.35 : x
  2. Step 2: Convert to fraction form
    275,015.04/379,538.28 = 154,156.35/x
  3. Step 3: Cross multiply
    275,015.04x = 379,538.28 × 154,156.35
  4. Step 4: Simplify right side
    275,015.04x = 58,508,235,930.08
  5. Step 5: Solve for x
    x = 58,508,235,930.08/275,015.04
  6. Step 6: Final answer
    x = 212,745.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.